Journal of Materials Chemistry C,
Journal Year:
2024,
Volume and Issue:
12(36), P. 14202 - 14221
Published: Jan. 1, 2024
This
review
provides
recent
advances
in
flexible
iontronic
pressure
sensors
including
strategies
to
enhance
sensing
performances
and
their
applications
discusses
future
directions
for
implementing
these
advancements
practical
applications.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(2), P. 2554 - 2563
Published: Jan. 3, 2024
Flexible
pressure
sensors
have
been
widely
concerned
because
of
their
great
application
potential
in
the
fields
electronic
skin,
human–computer
interaction,
health
detection,
and
so
on.
In
this
paper,
a
flexible
sensor
is
designed,
with
polydimethylsiloxane
(PDMS)
films
protruding
structure
as
elastic
substrate
poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate)
(PEDOT:PSS)/cellulose
nanocrystals
(CNC)
conductive-sensitive
material.
The
has
wide
linear
detection
range
(0–100
kPa),
outstanding
sensitivity
(2.32
kPa–1),
stability
more
than
2000
cycles.
proven
to
be
able
detect
human
movements
(finger
bending,
elbow
etc.)
small
(breathing,
pulse,
etc.).
addition,
array
can
distribution
judge
shape
object.
A
smart
wristband
equipped
four
designed.
Among
them,
k-nearest
neighbor
(KNN)
algorithm
used
classify
data
achieve
high
accuracy
(99.52%)
recognition
seven
kinds
wrist
posture.
This
work
provides
new
opportunity
fabricate
simple,
applications
next-generation
intelligent
robotics.
ACS Nano,
Journal Year:
2023,
Volume and Issue:
17(9), P. 8293 - 8302
Published: April 19, 2023
Touch
panels
are
deemed
as
a
critical
platform
for
the
future
of
human–computer
interaction
and
metaverse.
Recently,
stretchable
iontronic
touch
have
attracted
attention
due
to
their
superior
adhesivity
human
body.
However,
such
adhesion
can
not
be
named
"real
wearable",
leading
discomfort
wearer,
rashes
or
itching
with
long-time
wearing.
Herein,
skin-friendly
wearable
textile-based
panel
highly
touch-sensing
resolution
deformation
insensitivity
is
designed
based
on
an
in-suit
growing
strategy.
This
endows
excellent
interfacial
hydrophilic
biocompatibility
skin
by
overcoming
bottlenecks
hydrogel-based
uncomfortable
sticky
interface
low
mechanical
behavior.
The
developed
enables
handwriting
good
capacity
(114
MPa),
nearly
4145
times
higher
than
pure
hydrogel.
More
importantly,
our
possesses
intrinsic
wide
external
loading
from
silver
fiber
(<0.003
g)
even
heavy
metal
block
(>10
kg).
As
proof
concept,
applied
interaction,
flexible
keyboard
sketchpad.
qualitities
helpful
next-generation
electronics.
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(20), P. 24923 - 24932
Published: May 9, 2023
Inspired
by
the
interlocked
biological
geometry
of
human
skin,
herein,
we
design
a
flexible
and
transparent
sensor
with
square
column
arrays
composites
Ag
nanoparticles
(AgNPs),
citric
acid
(CA),
poly(vinyl
alcohol)
(PVA),
which
exhibit
multisensory
capabilities
for
pressure,
temperature,
humidity.
As
pressure
sensor,
AgNPs/CA/PVA
possesses
high
sensitivity
(-1.82
kPa-1),
low
detection
limit
(10
Pa),
fast
response
(75
ms),
outstanding
stability
due
to
contact
resistance
pressure.
Because
rigid
dependence
composite
on
can
also
act
as
temperature
exhibits
resolution
(0.1
°C)
reliability
in
detecting
ambient
temperature.
In
addition,
it
is
found
that
amount
water
molecules
adsorbed
PVA
CA
changes
Therefore,
able
detect
humidity
real
time.
This
work
proposes
simple
but
useful
route
fabricate
electrical
skin
has
great
potential
perception
Advanced Science,
Journal Year:
2023,
Volume and Issue:
11(3)
Published: Nov. 29, 2023
Abstract
Developing
electronic
skins
(e‐skins)
that
are
comparable
to
or
even
beyond
human
tactile
perception
holds
significant
importance
in
advancing
the
process
of
intellectualization.
In
this
context,
a
machine‐learning‐motivated
micropyramid
array
bimodal
(MAB)
e‐skin
based
on
capacitive
sensing
is
reported,
which
enables
spatial
mapping
applications
(proximity
and
pressure)
implemented
via
fringing
iontronic
effects,
such
as
contactless
measurement
3D
objects
contact
recognition
Braille
letters.
Benefiting
from
effect
single‐micropyramid
structure,
MAB
pressure
mode
yields
impressive
features:
maximum
sensitivity
655.3
kPa
−1
(below
0.5
kPa),
linear
327.9
(0.5–15
an
ultralow
limit
detection
0.2
Pa.
With
assistance
multilayer
perceptron
convolutional
neural
network,
can
accurately
perceive
6
materials
10
surface
shapes
training
learning
using
collected
datasets
proximity
modes,
thus
allowing
it
achieve
precise
different
within
one
proximity‐pressure
cycle.
The
development
opens
new
avenue
for
robotic
skin
expansion
advanced
applications.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: April 8, 2024
Abstract
Flexible
pressure
sensors
can
convert
mechanical
stimuli
to
electrical
signals
interact
with
the
surroundings,
mimicking
functionality
of
human
skins.
Piezocapacitive
sensors,
a
class
most
widely
used
devices
for
artificial
skins,
however,
often
suffer
from
slow
response-relaxation
speed
(tens
milliseconds)
and
thus
fail
detect
dynamic
or
high-frequency
vibrations.
Here,
we
show
that
contact-separation
behavior
electrode-dielectric
interface
is
an
energy
dissipation
process
substantially
determines
time
sensors.
We
reduce
response
relaxation
~0.04
ms
using
bonded
microstructured
effectively
diminishes
interfacial
friction
dissipation.
The
high
allows
sensor
vibrations
over
10
kHz,
which
enables
not
only
force
detection,
but
also
acoustic
applications.
This
shows
negligible
hysteresis
precisely
track
stimuli.
Our
work
opens
path
promote
piezocapacitive
into
submillisecond
range
extend
their
applications
in
range.